Characodon geddesi Regan, Cyprinus viviparus Bustamante, Girardinichthys innominatus Bleeker, Limnurgus variegatus Günther, PDF | A population of the Chapultepec splitfin Girardinichthys viviparus was found in the urban Lake Alameda Oriente. Biometry data for. This study evaluates the estrogenic effects of these compounds on the black-fin goodeid Girardinichthys viviparus, an endangered fish species in Mexico with a.
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It was the first species of Cyprinodonts, where livebearing has been observed. However, the species had been already described in by S.
Girardinichthys viviparus has been the first cyprinodontiform fish, where livebearing has been observed, probably as early as Another possibility may have been the introduction by man. We need to more than double the number of wild species plants, animals and fungi assessed.
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To save searches and access a historical view of information you have downloaded you are required to register for an account. It prefers clear to murky water and depths between 0. The IUCN Red List Categories and Criteria are intended to be an easily and widely understood system for classifying species at high risk of global extinction.
Most parts of this Lake disappeared during the last decades, and with this parts disappeared also Girardinichthys viviparus. A taxon is Endangered EN when the best available evidence indicates that it meets any of the criteria A to E for Endangered, and it is therefore considered to be facing a very high risk of extinction in the wild.
Species categorized as Endangered EN. Far more than a list of species and their status, it is a powerful tool to inform and catalyze action for biodiversity conservation and policy change, critical to protecting the natural resources we need to survive.
The paired fins are clear. Species categorized as Critically Endangered CR. Sometimes, females show a gravity spot. The drainage of the Valley coupled with the rapid expansion of Mexico City led to a drastic decline in the distribution and abundance of G.
IUCN Red List of Threatened Species
Reconnecting people with nature was a hot topic during Europarcthe yearly conference of Protected Areas in Europe. It divides species into nine categories: Our new goal isspecies by Please enter your e-mail address and password below. The abbreviation for an ESU is composed of the first 3 letters of the genus, followed by the first 2 letters of the species name and an ongoing number in each species. Gill – who vivipadus a letter in from Don Joseph Anthony de Alzate y Ramirez, who observed the transit of the Venus in – this Don Alzate forwarded some preserved viviparous scaly fishes in to the Royal Academy of Sciences in Paris.
It might have been overlooked there, though this lake has been studied well. A taxon is Near Threatened NT when it has been evaluated against the criteria but does not qualify for Critically EndangeredEndangered or Vulnerable now, but is close to qualifying for or is likely to qualify for a threatened category in the biviparus future. The terra typica has been given with Mexico City. Create new account Request new password. However, our work is nowhere near complete.
Guenther had chosen the scientific name Limnurgus variegatus to “purge the barbarous” name Girardinichthys innominatusgiven by Bleeker six years before. This is of course not legimitated. If you throw these little fishes into water, they will swim as well as if they had been long accustomed to live in that element. The Mexcalpique inhabited originally the endorheic basin of the Lago de Texcoco. This is only achievable with support from people like you. A bluish glimmer can be seen with some specimens.
Species categorized as Data Deficient DD. Copyright by Susanne Schleussner. This species inhabits quiet water of lakes, ponds, canals and ditches over mud substrate.
A taxon is Critically Endangered CR when the best available evidence indicates that it meets any of the criteria A to E for Critically Endangered, and it is therefore considered to be facing an extremely high risk of extinction in the wild. The fins are clear to somehow dusky-grayish. Image 5 and 6: Species categorized as Extinct EX.
Skip to main content. Meanwhile, a study from Salgado et al revealed that in 2 of 5 known habitats, including the Laguna de Zumpango and the Requena Reservoir, this species has disappeared again and has survived only in the three lagos de Chapultepec in Mexico City.
Despite poor environmental conditions, the Xochimilco and Zumpango populations have managed to survive up to the present.